Software maintenance is considered to be the most expensive activity in software development and is used to ensure quality to the product. Regression Testing is a part of software maintainers which is done every time the software is changed. For software like Web services which represent a class of Service oriented architectures this activity is a challenging task. Since web services incorporate business functionality thus maintaining proper quality is an important concern. Due to inherent distributed, heterogeneous and dynamic in nature, regression testing is difficult and time consuming activity. Thus in order to reduce maintenance cost we have to reduce regression testing cost. Thus in this paper, we have given a comprehensive study of regression testing of web services exploring the challenges, approaches and tools used for them to ensure proper quality and inherently reducing the maintenance costs.

Divya Rohatgi et al., International Journal of Computer Engineering In Research Trends Volume 3, Issue 05, May-2016, pp. 261-265